英制惠氏螺纹的型式尺寸.doc

英制惠氏螺纹的型式尺寸 ? 英制普通螺纹 -- 粗牙 -- BSW 英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW) 名义尺寸Ww 牙型代号 大径mmd=D 螺距mmp 每英寸牙数tpi 中径mmd2=D2 小径外螺纹d3 牙型高H1 底孔直径mm 1/16 BSW 1.587 0.423 60 1.315 1.050 0.270 1.15 3/32 BSW 2.381 0.529 48 2.041 1.703 0.338 1.90 1/8 BSW 3.175 0.635 40 2.768 2.362 0.406 2.50 5/32 BSW 3.969 0.793 32 3.459 2.952 0.507 3.20 3/16 BSW 4.762 1.058 24 4.084 3.407 0.677 3.70 7/32 BSW 5.556 1.058 24 4.878 4.201 0.677 4.50 1/4 BSW 6.350 1.270 20 5.537 4.724 0.813 5.10 5/16 BSW 7.938 1.411 18 7.034 6.131 0.904 6.50 3/8 BSW 9.525 1.588 16 8.509 7.492 1.017 7.90 7/16 BSW 11.113 1.814 14 9.951 8.789 1.162 9.20 1/2 BSW 12.700 2.117 12 11.345 9.990 1.355 10.40 5/8 BSW 15.876 2.309 11 14.397 12.918 1.479 13.40 3/4 BSW 19.051 2.540 10 17.424 15.798 1.627 16.25 7/8 BSW 22.226 2.822 9 20.419 18.611 1.807 19.25 1 BSW 25.400 3.175 8 23.368 21.335 2.033 22.00 1 1/8 BSW 28.576 3.629 7 26.253 23.929 2.324 24.50 1 1/4 BSW 31.751 3.629 7 29.428 27.104 2.324 27.25 1 3/8 BSW 34.926 4.233 6 32.215 29.505 2.711 30.25 1 1/2 BSW 38.100 4.233 6 35.391 32.680 2.711 33.50 1 5/8 BSW 41.277 5.080 5 38.024 34.771 3.253 35.50 1 3/4 BSW 44.452 5.080 5 41.199 37.946 3.253 38.50 1 7/8 BSW 47.627 5.645 4 1/2 44.012 40.398 3.614 41.25 2 BSW 50.802 5.645 4 1/2 47.187 43.573 3.614 44.50 2 1/4 BSW 57.152 6.350 4 53.086 49.020 4.066 50.00 2 1/2 BSW 63.502 6.350 4 59.436 55.370 4.066 56.00 2 3/4 BSW 69.853 7.257 3 1/2 65.205 60.558 4.647 61.50 3 BSW 76.203 7.257 3 1/2 71.556 66.909 4.647 68.00 3 1/4 BSW 82.553 7.816 3 1/4 77.548 72.544 5.005 73.75 3 1/2 BSW 88.903 7.816 3 1/4 83.899 78.894 5.005 80.00 3 3/4 BSW 95.254 8.467 3 89.832 84.410 5.422 85.50 4 BSW 101.604 8.467 3 96.182 90.760 5.422 92.00 4 1/4 BSW 107.954 8.835 2 7/8 102.297 96.639 5.657 98.00 4 1/2 BSW 114.304 8.835 2 7/8 108.647 102.990 5.657 104.20 4 3/4 BSW 120.665 9.237 2 3/4 114.740 108.625 5.915 110.00 5 BSW 127.005 9.237 2 3/4 121